Advertising campaigns /

Added t.-p.

The Detroit city directory and advertising gazetteer of Michigan for 1855-56.

Mode of access: Internet.

Bibliography on the theory of diffraction and propagation of radio waves

"ASTIA document no. AD 117044."

Determination of the masses of the Moon and Venus and the astronomical unit from radio tracking data of the Mariner II spacecraft

"Prepared under contract no. NAS 7-100, National Aeronautics and Space Administration."